Postmark vs SendGrid: Which is Better in 2026?
Postmark and SendGrid are both Email/Messaging tools, made for different people. Postmark is for SaaS teams that care most about transactional email arriving fast, with message history they can search. SendGrid is for teams that want Twilio’s email API with dedicated IPs and subusers on higher plans, alongside other Twilio products.
Quick verdict
There’s no single winner; pick on your constraint. Choose Postmark if you want transactional and broadcast email on separate streams. Choose SendGrid if you want dedicated IPs and subusers included on a self-serve plan.
Postmark vs SendGrid: Side by Side
| Postmark | SendGrid | |
|---|---|---|
| Category | Email/Messaging | Email/Messaging |
| What it is | Transactional email service | Email API (Twilio SendGrid) |
| Channels | Transactional and broadcast streams | Transactional email; marketing as a separate product |
| Free access | 100 emails a month | 60-day trial, 100 emails a day |
| How you pay | Monthly by volume, plus overage per 1,000 | Monthly plan by volume |
| What you manage | API and SMTP; dedicated IP add-on at volume | API and SMTP; dedicated IP from Pro |
| Pricing | Free · paid from $15/mo | From $19.95/mo |
| Starting price | Free tier available | From $19.95/mo |
| Free tier | — | |
| Best for | Email/Messaging: transactional, deliverability, message history | Email/Messaging: Twilio, dedicated IPs, high volume |
Pros & Cons
- Separate transactional and broadcast streams
- Searchable message history
- Low overage on Pro and Platform
- Simple published pricing
- Free plan is only 100 emails a month
- Dedicated IP only from 300,000 emails a month
- Basic retention fixed at 45 days
- Dedicated IP included from Pro
- Subusers and SSO on Pro
- Part of Twilio alongside SMS and voice
- Up to 1,000 teammates on Pro
- No permanent free plan, 60-day trial only
- Monthly email caps not listed per plan
- Marketing Campaigns sold separately
Key Features Compared
Postmark
- Free developer plan: 100 emails a month
- Basic: $15 a month for 10,000 emails, $1.80 per extra 1,000, 45-day retention
- Pro: $16.50 a month for 10,000, $1.30 per extra 1,000, retention up to 365 days
- Platform: $18 a month for 10,000, $1.20 per extra 1,000, unlimited broadcast streams
- Dedicated IP add-on $50 a month for senders at 300,000+ emails a month
SendGrid
- Free trial: 60 days, 100 emails a day, no card
- Essentials: from $19.95 a month; 2 event webhooks, 1 teammate
- Pro: from $89.95 a month; 1 dedicated IP, subusers, SSO, 1,000 teammates, 2,500 email validations
- Premier: custom; 5,000 email validations
- Volume set with a slider; overage may apply. Marketing Campaigns sold separately
Choose Postmark if…
- You want to start free. Postmark has a free tier and SendGrid does not.
- Budget is tight: paid plans start lower ($15/mo vs $19.95/mo).
- You want transactional and broadcast email on separate streams.
- You need searchable message history for support.
Choose SendGrid if…
- You want dedicated IPs and subusers included on a self-serve plan.
- You already buy SMS or voice from Twilio.
- You need many teammates on one account.
Frequently Asked Questions
Is Postmark better than SendGrid?⌄
There’s no single winner; pick on your constraint. Choose Postmark if you want transactional and broadcast email on separate streams. Choose SendGrid if you want dedicated IPs and subusers included on a self-serve plan.
What is the difference between Postmark and SendGrid?⌄
What it is. Postmark: Transactional email service. SendGrid: Email API (Twilio SendGrid). Channels. Postmark: Transactional and broadcast streams. SendGrid: Transactional email; marketing as a separate product. Free access. Postmark: 100 emails a month. SendGrid: 60-day trial, 100 emails a day. How you pay. Postmark: Monthly by volume, plus overage per 1,000. SendGrid: Monthly plan by volume. What you manage. Postmark: API and SMTP; dedicated IP add-on at volume. SendGrid: API and SMTP; dedicated IP from Pro.
Postmark vs SendGrid: which is cheaper?⌄
Postmark pricing: Free · paid from $15/mo. SendGrid pricing: From $19.95/mo. Confirm current pricing on each tool's official site, as plans change.
When should I skip both Postmark and SendGrid?⌄
Skip Postmark if you need a bigger free allowance. Resend gives 3,000 emails a month. Skip SendGrid if you want a permanent free tier. Resend and Mailgun have one.
Sources · tool facts checked November 2026
See more options in our guide to the best email/messaging tools for startups.
Still not sure which to pick?
Get a free, AI-powered tech stack, including the best email/messaging pick for your budget and team, in 60 seconds.